Quote:
Originally Posted by Nmbrsix
Something just occurred to me...
My car came with a non-OEM (likely eBay) rear spoiler. Not the OEM unit.
It does extend, but I have no idea as to whether it has any real effect.
I wonder if that could be causing the higher-speed instability?
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Yes. Aero is off. Too much rear downforce is making the front light, and changing the rake with the front lift.